a_dinosaur/Lesson10-SDL3
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a dinosaur
2024-03-12 21:34:00 +11:00
parent 05d2ac2d2a
commit 0c60210c45
1 changed files with 92 additions and 84 deletions
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176
Lesson10.c
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@@ -17,7 +17,6 @@
SDL_Window* win = NULL; // Holds Our Window Handle
SDL_GLContext ctx = NULL; // Permanent Rendering Context
bool active = true; // Window Active Flag Set To TRUE By Default
bool fullscreen = true; // Fullscreen Flag Set To Fullscreen Mode By Default
bool blend = false; // Blending ON/OFF
@@ -47,7 +46,7 @@ GLfloat z = 0.0f; // Depth Into The Screen
GLuint filter; // Which Filter To Use
// Storage For 3 Textures
GLuint texture[3] = { 0, 0, 0};
GLuint texture[3] = { 0, 0, 0 };
typedef struct tagVERTEX
{
@@ -480,9 +479,88 @@ void WndProc(SDL_Event *event)
}
}
int Update(void)
{
// Draw The Scene. Watch Quit Messages From DrawGLScene()
if (!DrawGLScene())
{
done = true; // DrawGLScene Signalled A Quit
return 1;
}
SDL_GL_SwapWindow(win); // Swap Buffers (Double Buffering)
// Handle keyboard input
const Uint8* keys = SDL_GetKeyboardState(NULL);
if (keys[SDL_SCANCODE_PAGEUP])
{
z -= 0.02f;
}
if (keys[SDL_SCANCODE_PAGEDOWN])
{
z += 0.02f;
}
if (keys[SDL_SCANCODE_UP])
{
xpos -= (float)sin(heading * piover180) * 0.05f;
zpos -= (float)cos(heading * piover180) * 0.05f;
if (walkbiasangle >= 359.0f)
{
walkbiasangle = 0.0f;
}
else
{
walkbiasangle += 10;
}
walkbias = (float)sin(walkbiasangle * piover180) / 20.0f;
}
if (keys[SDL_SCANCODE_DOWN])
{
xpos += (float)sin(heading*piover180) * 0.05f;
zpos += (float)cos(heading*piover180) * 0.05f;
if (walkbiasangle <= 1.0f)
{
walkbiasangle = 359.0f;
}
else
{
walkbiasangle -= 10;
}
walkbias = (float)sin(walkbiasangle * piover180) / 20.0f;
}
if (keys[SDL_SCANCODE_RIGHT])
{
heading -= 1.0f;
yrot = heading;
}
if (keys[SDL_SCANCODE_LEFT])
{
heading += 1.0f;
yrot = heading;
}
if (keys[SDL_SCANCODE_PAGEUP])
{
lookupdown -= 1.0f;
}
if (keys[SDL_SCANCODE_PAGEDOWN])
{
lookupdown += 1.0f;
}
return 0;
}
int main(int argc, char *argv[])
{
SDL_Init(SDL_INIT_VIDEO);
// Ask The User Which Screen Mode They Prefer
@@ -500,103 +578,33 @@ int main(int argc, char *argv[])
SDL_ShowMessageBox(&msgbox, &bttnid);
if (bttnid == 1)
{
fullscreen = false; // Windowed Mode
fullscreen = false; // Windowed Mode
}
// Create Our OpenGL Window
if (!CreateGLWindow("Lionel Brits & NeHe's 3D World Tutorial", 640, 480, 16, fullscreen))
{
return 0; // Quit If Window Was Not Created
return 0; // Quit If Window Was Not Created
}
while (!done) // Loop That Runs While done=FALSE
do
{
SDL_Event event; // SDL Event Structure
while (SDL_PollEvent(&event) > 0) // Is There A Message Waiting?
SDL_Event event; // SDL Event Structure
while (SDL_PollEvent(&event) > 0) // Is There A Message Waiting?
{
WndProc(&event); // Deal with events
WndProc(&event); // Deal with events
}
// Draw The Scene. Watch Quit Messages From DrawGLScene()
if (active && !DrawGLScene()) // Active?
if (Update())
{
done = true; // ESC or DrawGLScene Signalled A Quit
break;
done = true;
}
} while (!done);
SDL_GL_SwapWindow(win); // Swap Buffers (Double Buffering)
// Handle keyboard input
const Uint8* keys = SDL_GetKeyboardState(NULL);
if (keys[SDL_SCANCODE_PAGEUP])
{
z -= 0.02f;
}
if (keys[SDL_SCANCODE_PAGEDOWN])
{
z += 0.02f;
}
if (keys[SDL_SCANCODE_UP])
{
xpos -= (float)sin(heading * piover180) * 0.05f;
zpos -= (float)cos(heading * piover180) * 0.05f;
if (walkbiasangle >= 359.0f)
{
walkbiasangle = 0.0f;
}
else
{
walkbiasangle += 10;
}
walkbias = (float)sin(walkbiasangle * piover180) / 20.0f;
}
if (keys[SDL_SCANCODE_DOWN])
{
xpos += (float)sin(heading*piover180) * 0.05f;
zpos += (float)cos(heading*piover180) * 0.05f;
if (walkbiasangle <= 1.0f)
{
walkbiasangle = 359.0f;
}
else
{
walkbiasangle -= 10;
}
walkbias = (float)sin(walkbiasangle * piover180) / 20.0f;
}
if (keys[SDL_SCANCODE_RIGHT])
{
heading -= 1.0f;
yrot = heading;
}
if (keys[SDL_SCANCODE_LEFT])
{
heading += 1.0f;
yrot = heading;
}
if (keys[SDL_SCANCODE_PAGEUP])
{
lookupdown -= 1.0f;
}
if (keys[SDL_SCANCODE_PAGEDOWN])
{
lookupdown += 1.0f;
}
}
// Shutdown
FreeResources();
KillGLWindow(); // Kill The Window
KillGLWindow(); // Kill The Window
SDL_Quit();
return EXIT_SUCCESS; // Exit The Program
return EXIT_SUCCESS; // Exit The Program
}